30 square feet.
2 x 5 is 10. 4 x 2 is 8. 10 + 8 = 18. If you look at where the two is at the top and make a line above it’s in half. So it would add 2 more to the four in the second box. So 6 x 2 = 12. And 18 + 12= 30.
The question you posted doesn't really show the question. Are there any words like how, when, where.... and do you have answer choices? : ) maybe then I can help?
Answer:
![x^{3}-3x^{2}-5x+15](https://tex.z-dn.net/?f=x%5E%7B3%7D-3x%5E%7B2%7D-5x%2B15)
Step-by-step explanation:
The roots of the given polynomial are: ![-\sqrt{5}, \sqrt{5}, 3](https://tex.z-dn.net/?f=-%5Csqrt%7B5%7D%2C%20%5Csqrt%7B5%7D%2C%203)
Since,
are the roots of the polynomial, according to the factor theorem,
would be the factors of the polynomial.
Since we have the factors of the polynomial, we can multiply them to get the desired polynomial.
Let the polynomial be represented by P(x), so
![P(x) = (x - (-\sqrt{5}))(x-\sqrt{5})(x-3)\\\\ P(x)=(x +\sqrt{5})(x-\sqrt{5})(x-3)\\\\ P(x)=(x^{2}-(\sqrt{5} )^{2})(x-3)\\\\ P(x)=(x^{2}-5)(x-3)\\\\ P(x)=x^{3}-3x^{2}-5x+15](https://tex.z-dn.net/?f=P%28x%29%20%3D%20%28x%20-%20%28-%5Csqrt%7B5%7D%29%29%28x-%5Csqrt%7B5%7D%29%28x-3%29%5C%5C%5C%5C%20P%28x%29%3D%28x%20%2B%5Csqrt%7B5%7D%29%28x-%5Csqrt%7B5%7D%29%28x-3%29%5C%5C%5C%5C%20P%28x%29%3D%28x%5E%7B2%7D-%28%5Csqrt%7B5%7D%20%29%5E%7B2%7D%29%28x-3%29%5C%5C%5C%5C%20P%28x%29%3D%28x%5E%7B2%7D-5%29%28x-3%29%5C%5C%5C%5C%20P%28x%29%3Dx%5E%7B3%7D-3x%5E%7B2%7D-5x%2B15)
The polynomial represented by P(x) has the given roots.
You would do, 4,200 over 8,000 equals x over 500,000 and then
x*8000=4200*500000
8000 = 2100000000
divide
x= 262500
262500 people
The ostrich can run 1.0376 miles per hour